WO1990009260A1 - Outil abrasif et son procede de fabrication - Google Patents

Outil abrasif et son procede de fabrication Download PDF

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Publication number
WO1990009260A1
WO1990009260A1 PCT/US1990/000502 US9000502W WO9009260A1 WO 1990009260 A1 WO1990009260 A1 WO 1990009260A1 US 9000502 W US9000502 W US 9000502W WO 9009260 A1 WO9009260 A1 WO 9009260A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
particles
mesh
openings
abrasive
Prior art date
Application number
PCT/US1990/000502
Other languages
English (en)
Inventor
Peter T. Dekok
Naum N. Tselesin
Original Assignee
Dekok Peter T
Tselesin Naum N
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dekok Peter T, Tselesin Naum N filed Critical Dekok Peter T
Priority to DE69028455T priority Critical patent/DE69028455T2/de
Priority to CA002025567A priority patent/CA2025567C/fr
Priority to EP90903252A priority patent/EP0407568B1/fr
Publication of WO1990009260A1 publication Critical patent/WO1990009260A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for

Definitions

  • This invention relates generally to cuttirig and abrasive tools, and is more particularly concerned with a tool comprising a flexible matrix with particles fixed in the matrix in a predetermined pattern, and a method for providing such tool.
  • Cutting tools are commonly made by placing diamond chips in a matrix material such as a metal powder or resin. The matrix material is then compressed and sintered to hold the diamond chips securely. It will be understood that this well known technique yields a product with diamonds randomly distributed therethrough, and there is little that can be done to provide otherwise.
  • Another technique for providing cutting or polishing tools utilizes electroplating.
  • diamond chips are placed on a metal surface, and a metal is electroplated onto the metal surface, successive layers being plated until the diamonds are fixed to the metal surface. While this technique allows the diamond to be in a regular pattern if desired, the individual stones are usually set by hand. Also, thought,..the electroplated tools have met with considerable commercial success, s ch tools are somewhat delicate in that the stones are fixed to the tool only by the relatively thin layers " of metal, and there can be only a single layer of diamonds to act as the cutting surface. The tool loses its shape as furrher layers of metal are deposited.
  • the prior art has not provided a flexible cutting or abrasive tool having diamonds of a selected size firmly held in a flexible matrix, with the diamonds being easily arrangeable in a selected, regular pattern. Disclosure of Invention
  • the present invention provides a flexible abrasive tool having particles of diamond or other hard substance arranged in a selected pattern and embedded in a carrier.
  • the type of the particles and the size of the particles can be selected to yield the desired characteristics of the tool.
  • the carrier may comprise known materials such as metal powders, metal fibers, or mixtures of metal powders and fibers; or, the carrier may comprise a wire mesh, a particle being placed within each opening of the mesh, or within selected openings of the mesh, and the particles are then fixed to the mesh.
  • the carrier is flexible so that it can be shaped to conform to a given substrate.
  • Fig. 1 is a perspective view showing a carrier having particles embedded in one surface thereof in accordance with the present invention
  • Fig. 2 is an enlarged cross-sectional view taker. substantially along the line 2—2 in Fig. 1;
  • Fig. 3 is a plan view showing particles embedded in a wire mesh
  • Fig. 4 is a cross-sectional view taken substantially 5 along the line 4—4 in Fig. 3;
  • Fig. 5 is a view similar to Fig. 4 but showing a modified form thereof;
  • Fig. 8 is a plan view, on a reduced scale, showing another form of the arrangement shown in Fig. 7;
  • Fig. 9 is a cross-sectional view illustrating a 5 composite tool made in accordance with the present invention. Modes for Carrying Out the Invention
  • Fig. 1 shows a carrier 15 having a plurality of particles 16 embedded therein.
  • a carrier 15 having a plurality of particles 16 embedded therein.
  • Those skilled in the art will understand that it is known to use preformed structures of metal powders or metal fibers, or mixtures of metal powders and fibers. These 5 materials are readily available, and are well known to those skilled in the art, so no further description is thought to be necessary. With such materials in mind, it will be understood that particles of a hard substances such as diamond can be placed against the carrier 15 and 0 forced into the surface of the carrier to produce- the arrangement shown in Fig. 1. After the particles have been positioned as desired, the material can be sintered, with or without pressure.
  • Fig. 2 of the drawings shows the structure of the 5 device shown in Fig. 1. It will here be seen that the particles 16 have been urged into the carrier" 15 sufficiently that the particles 16 are well supported. As a result, once the carrier 15 has been sintered, the particles 16 are well set and the device is a very effective abrasive.
  • the carrier 15 is shown as flat in Figs. 1 and 2, it is known that the material is flexible; thus, the abrasive material can be formed to virtually any shape desired. Also, when the carrier 15 is placed under pressure during the sintering the density of the carrier is increased to provide a firmer hold on the particles 16.
  • Fig. 3 of the drawings discloses a woven mesh 18 having a particle 19 in each opening of the mesh.
  • the mesh 18 may be any metal, such as copper, brass or nickel.
  • a particle of an appropriate size to fit in the openings of the mesh 18 is used; then, to hold the particles in place, metal powder or the like indicated at 20 is placed into each opening in the mesh, surrounding the particles 19.
  • the metal powder can be sintered to secure the particles 19 in place, the sintered powder 20 being attached to both the mesh 18 and the particles 19.
  • the sintered powder 20 will secure the wires of the mesh to one another.
  • the particles can be fixed to the mesh be electroplating, gluing, or by other means if desired.
  • the wire mesh 18 is inherently flexible; and, by placing the particle or particles in each opening in the mesh, flexibility is maintained. Furthermore, as is best shown in Fig. 4, the particles 19 can extend beyond the mesh 18 on both sides, so the material is a two-sided abrasive or cutting tool.
  • FIG. 5 An alternative to the construction shown in Figs. 3 and 4 is shown in Fig. 5. Again, there is the mesh designated at 21, and particles 22 are placed within the openings of the mesh 21. Rather than utilize the metal powder as in Fig. 4; however, one might use a mesh 21 made of a metal having a relatively low melting point. The mesh containing the particles can then be heated just until the metal of the mesh flows somewhat. Thus, it
  • hard particles such as diamond, tungsten carbide or 0 the like can be arranged in the desired pattern, and placed into a matrix.
  • the matrix may take the form of a metal powder and/or metal fiber, or may take the form of a wire mesh. In either case, the particles are held in place, and the material is sintered to bond the particles 5 permanently in position.
  • Such materials can be formed with the particles protruding from one side as in Figs. 1 and 2, or protruding from two sides as in Figs. 4 and 5.
  • Fig. 6 shows a carrier 25, the carrier 25 being formed of metal powder or the like as is discussed above.
  • each mesh there is a particle, the particles in mesh 26 being designated at 30.
  • the resulting tool therefore has particles 29 and 30 protruding from both sides of the carrier, and further has the mesh 26 and 28 to lend stability to the carrier and to assist in
  • the mesh 26 and 28 can be placed either completely within , the carrier 25 or somewhat exposed at the surface of the carrier. The exposed mesh protects the diamonds and assists in holding the diamonds as the diamonds wear.
  • FIG. 7 illustrates a mesh as shown in Fig. 3, the mesh being fixed to a substrate such as a metal plate or the like. Since the abrasive material is the same as is shown in Fig 3, the same reference numerals are used for the same parts. It will therefore be seen that the mesh 18 has particles 19 held in place by a sintered powder 20 to provide a flexible abrasive material. This flexible abrasive material is then fixed to a metal plate 31 as by welding, brazing or other known means. Since the mesh 18 is flexible, the substrate 31 may be flat, circular, or other desired curved shape. The mesh 18 can be curved to fit the plate 31, and then welded or otherwise fixed to retain the shape. Alternatively, the mesh can be fixed to the substrate by the same material that holds the particles, so both steps are accomplished during the sintering process.
  • Fig. 8 shows another variation of tool made with the present invention. It is sometimes desirable to allow release space between abrasive portions, and this can be provided as desired with the structure of the present invention.
  • the mesh 18 as shown in Fig. 7 may be cut to the desired shape and fixed into place to achieve the arrangement shown in Fig. 8. Also, the particles may be placed in the pattern shown, and urged into a mass of powder or fiber as discussed in conjunction with Fig. 1.
  • a mesh may be used, particles being placed in selected openings of the mesh.
  • the desired pattern can be created, and the resulting abrasive material can be fixed to a sanding disk or the like. From the above description it should also be obvious that the disk of Fig. 8 can be made like the product shown in Fig. 3.
  • the mesh 18 would be circular, and selected openings would contain the particles 19. 7 .
  • the dashed lines indicate boundaries of the original layers that are used to create the multi ⁇ layer material.
  • the outer layers 34 and 35 have closely spaced particles 2f6Aand 38 on their outer sides.
  • the next layers 39 and ⁇ $0 have more widely spaced particles 41 and 42, which 1-ie on the boundaries between the layers.
  • the inner, center;' layer 44 has widely spaced particles 45 which protrude from both sides, and are on the boundaries of the center and the next layers.
  • the layers can be bonded together by brazing completed layers, or' by sintering unsintered layers, as desired.
  • the particles that provide the abrasive qualities may be any of numerous materials. Diamonds are often used for such tools, and the present invention is admirably suited to the use of diamonds; however, other materials can be used as desired. Tungsten carbide, cemented carbide, boroB nitrite, silicon carbide, or aluminum oxide are usable as the abrasive particles, depending on the qualities desired.
  • the present invention includes the concept of placing two or more particles in one opening of the mesh such as the mesh 18, the preferred form of the invention 5 comprises the placing of the one particle in one opening. Even if more than one particle is placed in an opening, however, the particles may be of substantial size and do not have to be hand placed.
  • the present invention provides a flexible carrier containing the desired concentration of diamonds or other hard particles, the particles being firmly held in the carrier by sintered metal powder or the like.
  • the resulting product can be used singly, or can be layered 5 to provide a tool having a varying concentration as desired.
  • the carrier is flexible, the product of the present invention can be shaped to conform to the contour of intricately shaped substrates. Thus, form blocks can be made without the requirement for hand 0 placing of diamonds and with the strength of diamonds held in a sintered material.
  • the product of the present invention can therefore be utilized to provide routers, diamond rolls, and virtually any other shaped tool.

Abstract

On forme une matière abrasive en espaçant uniformément des particules (16, 19, 22, 30) de diamant ou d'une autre matière abrasive dure, sur un support souple (15, 18), en insérant les particules dans le support, et en fixant les particules au support, lesquelles dépassent de ce dernier pour avoir une action abrasive. On peut répartir lesdites particules en les plaçant dans les ouvertures d'une grille (18, 21, 26), ladite grille pouvant être amovible ou faire partie du support. Comme ledit support est flexible, on peut lui donner la forme de substrats de formes complexes. On peut lier ensemble une pluralité de supports (34, 35, 39, 40) de différentes concentrations, afin de former des outils de concentrations diverses.
PCT/US1990/000502 1989-01-30 1990-01-29 Outil abrasif et son procede de fabrication WO1990009260A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69028455T DE69028455T2 (de) 1989-01-30 1990-01-29 Schleifwerkzeug und verfahren zur herstellung
CA002025567A CA2025567C (fr) 1989-01-30 1990-01-29 Abrasif et methode de fabrication
EP90903252A EP0407568B1 (fr) 1989-01-30 1990-01-29 Outil abrasif et son procede de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07303924 US4925457B1 (en) 1989-01-30 1989-01-30 Method for making an abrasive tool
US303,924 1989-01-30

Publications (1)

Publication Number Publication Date
WO1990009260A1 true WO1990009260A1 (fr) 1990-08-23

Family

ID=23174284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/000502 WO1990009260A1 (fr) 1989-01-30 1990-01-29 Outil abrasif et son procede de fabrication

Country Status (10)

Country Link
US (2) US4925457B1 (fr)
EP (2) EP0407568B1 (fr)
JP (1) JP2991490B2 (fr)
AT (2) ATE238886T1 (fr)
AU (1) AU5080090A (fr)
CA (1) CA2025567C (fr)
DE (2) DE69028455T2 (fr)
DK (2) DK0407568T3 (fr)
ES (2) ES2193213T3 (fr)
WO (1) WO1990009260A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996014963A1 (fr) * 1994-11-16 1996-05-23 'diamant Boart', Societe Anonyme Outil abrasif, de coupe ou analogue et procede de fabrication de cet outil
US7717972B2 (en) 2006-07-26 2010-05-18 Kinik Company Diamond disc manufacturing process

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JPH03505849A (ja) 1991-12-19
ATE238886T1 (de) 2003-05-15
DE69034066T2 (de) 2004-03-25
JP2991490B2 (ja) 1999-12-20
EP0407568A1 (fr) 1991-01-16
CA2025567C (fr) 2000-04-25
EP0732175B1 (fr) 2003-05-02
EP0732175A1 (fr) 1996-09-18
DK0732175T3 (da) 2003-08-11
EP0407568A4 (en) 1991-11-13
DE69028455T2 (de) 1997-03-20
US4925457B1 (en) 1995-09-26
CA2025567A1 (fr) 1990-07-31
US4925457A (en) 1990-05-15
DK0407568T3 (fr) 1997-02-17
US5092910B1 (en) 1995-09-26
ES2094753T3 (es) 1997-02-01
AU5080090A (en) 1990-09-05
DE69028455D1 (de) 1996-10-17
EP0407568B1 (fr) 1996-09-11
ATE142548T1 (de) 1996-09-15
DE69034066D1 (de) 2003-06-05
US5092910A (en) 1992-03-03

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